US PATENT SUBCLASS 277 / 548
.~.~.~ Plural complementary interfitting rings

Current as of: June, 1999
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277 /   HD   SEAL FOR A JOINT OR JUNCTURE

345  DF  SEAL BETWEEN RELATIVELY MOVABLE PARTS (I.E., DYNAMIC SEAL) {10}
500  DF  .~ Circumferential contact seal for other than piston {13}
543  DF  .~.~ Segmented ring {4}
548.~.~.~ Plural complementary interfitting rings

DEFINITION

Classification: 277/548

Plural complementary interfitting rings:

(under subclass 543) Segmented ring wherein the segmented ring has one or more adjacent rings where a portion of a peripheral surface of one the rings penetrates a corresponding recess on a peripheral surface of an adjoining ring.

(1) Note. This subclass does not include adjacent rings having complementary inclined or wedging surfaces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

489+, for a piston ring having sectional structure.

529+, for a dynamic, circumferential contact seal for other than a piston intended to be contained or compressed by a gland member in a packing box having a particular cross-sectional seal shape.